Pen



FIG. 1 is a front elevational view of a writing instrument showing mynew design thereof;

FIG. 2 is a right side elevational view thereof, the left side being amirror image thereof;

FIG. 3 is an elevational view of the penbody in an exploded condition,with the cap member removed for convenience of illustration, all sidebeing identical thereof;

FIG. 4 is a bottom plan view of FIG. 2 thereof;

FIG. 5 is a front elevational view of the pen cap thereof;

FIG. 6 is a right side elevational view of FIG. 5, left side being amirror image; thereof; and,

FIG. 7 is a top plan view of FIG. 5 thereof.

The ornamental design for a pen, as shown and described. 